public double Dist(clsLine l1)
{
clsLine l2 = default(clsLine);
clsLine l3 = default(clsLine);
l2 = l1.Normal();
l3 = new clsLine(l1.P1, this);
return(Abs(l2.Dot(l3)));
}
public static double Dist(clsPoint p1, clsLine l1)
{
//+ve for outside the wall, left handed; Also, +ve for above straight.
clsLine l2 = new clsLine();
clsLine l3 = new clsLine();
l2 = (clsLine)l1.Normal();
l3 = new clsLine(l1.P1, p1);
return(l2.Dot(l3));
}
public static clsPoint ProjectPoint(clsPoint p1, clsLine l1)
{
double d = 0;
clsPoint pt1 = new clsPoint();
clsLine l2 = new clsLine();
d = Dist(p1, l1);
pt1 = p1.Copy();
l2 = (clsLine)l1.Normal();
l2.Normalise();
l2.Scale(-d);
pt1.Move(l2.P2.X, l2.P2.Y);
return(pt1);
}
